Traction-wheel.



` 1o f` clear, and exact description ot the invention,

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= 1 seltenen ze. BREED; or WrirrnHALr., ein) non L. Hawai, or nner, `WIscoNsIN;` SAID l Hawai .assieme 'ro een) BREED.

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raeerrenwnnnn "To all whom it may concern:

:useful Infiprovenients in Vfront-ion-lYlieels;

and we do declare the following to be a full.

i such as Will enable others skilled in the nrt to which it appertains to make and use the sanie.`

Ourinvention has for its princilimlobject to provide a simply'eonstructed and inexpcnsive traction wheel having a plurality oflugs orcalks which 5. ill be automatically f projected beyond theperiphery ot.' the wheel as occasion may demand.

A further object to provide a novel yin'eans for limiting the projection ot the lugs im' for. totally preventingprojeetion thereof` `rln requlledi being supplemented by the*accompanying Figure l is a side elevation of the iinproved wheel showing the position of parts when traveling on a con'iparatively hard surface;

Fig. 2 is a similar view with sonic of the spokes omitted for the sake ot' clearness and disclosing the manner in which the mud lugs are projected when the wheel is traveling in soft earth or the like; and,

Fig. 3 is a'sectional view on the plane ot the line 3 8 of Fig. 2.

In the drawings abovel briefly described, the nuniieral l designates the tire of the irnproved Wheel, said tire being carried by suitable spokes 2., anchored at their inner ends to hub sections 3 and l respectively. The section 3 is rotatably mounted on a suitable axle4 5" whereas the section 4 is similarly mounted on. a sleeve 6 which rotatably surbv rounds said axle, said sleeve having a pair of spaced disks formed integrally with its inner end. Annuler flange-s 8 are by preter-` ence formed on the outer faces of the disirs general objects in. view, the invention resides in the novel fea-V tures ot' construction and unique combinationsof partsirto be hereinafter fully derscribed andclairned, the descriptive mattei Patented Unt; 225 191%.

Application :filed .Tune 25, 1917. Serial No. 176,233?

7 to receive therein the inner ends of the hub sections 3 and 4f. y

Suit-ably constructed nrins 9 are pivoted at one end betiveen the disks 7 whereas the otherends of said. arms are equipped-with suitable inud lugs or callas 10 passing slid ably through transverse slots 11 in the tire l, said tire being by preference reinforced on opposite sides oi? said slots by transverse rods 12. The arms 9 extend from the liub toward the tire on lines tangential to the edges of the disks 'l' and it will thus be obs vious that when said disks are rotated in the proper direction, the arrns will move to radial positions .findwll thus slide the lugs 10 outwardly through the slots 11. This action takes place automatically whenever it is desirable that the lugs be projected for eugageinent with the earth, as will be hereinafter more fully described. V

A driving Wheel-13 of any suitable type such as the gear shown is keyed on the inner end of the sleeve 6 und is driven by anyv 'Y preferred ineens carried o n the tractor traine not shown, By driving the Wh( 2l 13, the disks 7 exert. a tendency' to force the lugs 1i) outwardly7 but this is resisted more or less according to the nature of the roadway or the like over which the tractor is traveling. For instance, ifa comparatively hard stretch oit road is encountered. the Contact of the lugs therewith will prevent prejection of said lugs beyond the tire. On the other hand should it be necessary to travel over a stretch 'of sett earth or mud, there will be little resistance to the projection of the lugs and consequently they Will then be automatically extended for use. The amount oi projection is limited by suitable means em-` ployed tor restricting the movement-of the driving Wheel 13 in respectftothe tractor Wheel;

eef'

Mir

The means last referred to is preferablyin y the forni shown most clearly 1n Figs. 1 and.

of the drawings. A. bar 14C is secured at its'` ends to the tire 1 at substantially op osi points, the central portion of said bar eing- .wie

of arcuate shape and positioned concentricwith the Wheel 13, said bar serving as a.-.

support for a pair of stops 15 between which,` a third stop 16 operates, said last named stop being Jormed integrally with or otherwise n'iounted on the Wheel 13. This arrar ement of stops will limit the rotation of 13.@

Whee 13 and consequently will control the projection of the calks 10, since said stops are adjustable along the bar 14.

'the stops 15 are preferably of U-shape, the cross bars of saidstjops being receivable lm notches llt in the inner edge ot' bar 14,

whereas the arms ot' said stops straddle said bar and project bevond the outer edge thereof, suitable pins 17 being passed through the tree ends ot' said arms to maintain thestops in adjusted position. This construction is preferable but it will be obvious that other arrangements of parts could well be employed for holding the stops in one position or another, as occasion may demand.

Although the wheel will operate to equal advantage it embodying only the parts so t'ar described, coiled springs 1S are preferably employed to prevent rattling of the arms t) and lugs 10, one end of said, springs being connected to said arms, whereas the other ends thereoi are secured to the disks T, preferably by the pivot bolts 1) of the arms t). These springs also resist the outward movement ot' the arms sutiiciently to prevent projection oi the calks when the use thereoiLA is in reality unnecessary. lVhenever it is essential that the callts shall not be projected. however, one ot' the stops 15 is ,so adjusted along the bar 14 as to prevent relative movement ot the wheel 13 and the tractor wheel, whereupon the entire device must rotate bodily. The calks may be locked in any suitable adjusted position, also by suitably adjusting the stops 15.

From the foregoing. taken in connection with the, accompanying drawings, it will be obvious that although the invention is of an extremely simple and inexpensive nature,`it will be highly etlicient and durable, and will fulfil a long felt need in the art. Since probably the best. results are obtained by the specific (,'onstrnction shown, this construetion constitutes the preferred form oi the improved wheel, but we Vwish it understood that within the scope ot the invention as claimed, numerous minor changes may be made without sacrificing the principal advantages. li`urthermore, we wish it underw stood that the improved wheel may be Used on all sortsot' power driven machines.

We claim z- 1. The combination with a traction wheel, otI normally retracted mud lugs therefor, a rotary member mounted on the wheel for projecting said lugs, a driving wheel carried by and rotatable independently of the trac tor wheel` said driving wheel being` opera tively connected with said rotary member. a pair ot' stops on said tractor wheel, and an additional stop on said drivingv wheel operating between said pair ot stops to limit the relative turning ofthe two wheels..

The combination with a traction wheel, ot normally retracted mud lugs therefor, a rotary member mounted on the wheel for projecting said lugs, a driving wheel carried b v and rotatable independently of the tractor wheel, said driving wheel being op eratively connected with said rotary member, a pair of stops carried by the tractor wheel and -adjustable toward and away from each other,'and an additional stop on said driving whielfoperating between .said `pair ol stops to limit the relative turning of the two wheels.

3. The combination with a tractor wheel, ot normally retracted mud lugs therefor, a rotary member mounted at the axis of the wheel for projectingl said lugs, a driving wheel operatively connected with said meniber, an arcuate bar secured to the t 'actor wheel and having a pair of Stops, and an additional stop on said driviing` wheel operating between said pair of stops.

In testimony whereof` we have hereunto set our hands in the presence of two sub scribing witnesses.

GEORGE I. BREED. EDD L. HAWN. Witnesses:

EMMA Bamm, N. C. I'Iinmmrr.l 

